Securing protected health information based on software designation

ABSTRACT

Systems, methods, and computer program products to perform an operation comprising receiving, from a first process, a request to access content stored in a memory, determining that the content comprises protected health information (PHI), determining, from a secure table, a set of processes permitted to access the PHI, upon determining the first process is not a member of the set of processes, restricting access to the PHI by the first process, and upon determining the first process is a member of the set of processes, permitting access to the PHI by the first process.

BACKGROUND

The present invention relates to securing protected health information(PHI) data, and more specifically, to securing protected PHI data basedon a software designation.

The Health Insurance Portability and Accountability Act (HIPAA) requiresthat health information remain protected and confidential when stored incomputer systems. However, such personal information may be susceptibleto exposure under certain circumstances. For example, when an operatingsystem experiences a failure, a mechanism is used to collect data fromthe computer's memory to help assist in troubleshooting and repairprocesses. Similarly, a program that crashes or otherwise fails may sendcrash-related data that can be stored in memory. If the memory includesprotected health information, the data dump could violate the privacyrequirements of HIPAA.

SUMMARY

Embodiments disclosed herein provide systems, methods, and computerprogram products to perform an operation comprising receiving, from afirst process, a request to access content stored in a memory,determining that the content comprises protected health information(PHI), determining, from a secure table, a set of processes permitted toaccess the PHI, upon determining the first process is not a member ofthe set of processes, restricting access to the PHI by the firstprocess, and upon determining the first process is a member of the setof processes, permitting access to the PHI by the first process.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 illustrates a system which secures protected PHI data based on asoftware designation, according to one embodiment.

FIG. 2 illustrates techniques to secure protected PHI data based on asoftware designation, according to one embodiment.

FIG. 3 illustrates a method to secure protected PHI data based on asoftware designation, according to one embodiment.

DETAILED DESCRIPTION

Embodiments disclosed herein provide techniques to secure sensitivedata. Embodiments disclosed herein allow software processes executing ona computer to specify, in a secure profile, whether the software uses,accesses, writes, or otherwise interacts with protected healthinformation (PHI). A management entity, such as an operating system orhypervisor, may manage the secure profile. When a process associatedwith PHI data attempts to write to memory or storage, the operatingsystem (or hypervisor) may mark the data as protected (or secure) PHIdata in the secure profile. The operating system (or hypervisor) mustthen authorize subsequent attempts to access the PHI data made by anyprocess. The management entity prevents processes unauthorized processesfrom accessing the PHI data.

For example, in the event of a system failure, a memory dump process maybe initiated to collect information stored in memory. The memory dumpmay be a snapshot of system memory (or the memory allocated to a virtualmachine). However, the memory may contain PHI data, such as in the casewhere database tables are pre-loaded into memory for performancereasons. If the memory contains PHI data, embodiments disclosed hereinmay restrict the memory dump process from reading the PHI data, keepingthe PHI data secure. Similar techniques may be applied to otherscenarios, such as where an application crashes, and the contents ofmemory are sent to a remote source (such as the developer of theapplication) as part of a reporting feature provided by developer.

Similarly, in virtualized environments, virtualization/partitionplatform dump may occur in the event of a failure. Such memory dumps mayinclude large amounts of customer data spanning multiple domains (suchas memory and processors). This data may be used by the virtual host(such as a hypervisor) to manage resources from pooled resources (suchas memory, processors, and disk I/O). With the advent of virtualizedtechnologies such as hibernation and suspension of virtual machines, thehypervisor may have customer data preserved in its memory due to therequirements to be able to resume the virtual machine at any given time.Similarly, if a problem occurs in the system while the data is in thememory, a dump of the host machine will include personal data, such asPHI data. Embodiments disclosed herein ensure that any such data isaccessible only to a finite set of pre-approved software processes.

Although protected health information (PHI) data is used as a referenceexample herein, the disclosure is equally applicable to securing alltypes of data, and any reference to PHI data should not be consideredlimiting of the disclosure. Similarly, the use of “software,” “process,”or “service” should not be considered limiting of the disclosure, asembodiments disclosed herein apply to other applications or codeattempting to access secure data.

FIG. 1 illustrates a system 100 which a system which secures protectedPHI data based on a software designation, according to one embodiment.The system 100 includes a computer 102 connected to other computers viaa network 130. In general, the network 130 may be a telecommunicationsnetwork and/or a wide area network (WAN). In a particular embodiment,the network 130 includes access to the Internet.

The computer 102 generally includes a processor 104 which obtainsinstructions and data via a bus 120 from a memory 106 and/or storage108. The computer 102 may also include one or more network interfacedevices 118, input devices 122, and output devices 124 connected to thebus 120. The computer 102 is generally under the control of an operatingsystem 112. Examples of operating systems include the UNIX operatingsystem, versions of the Microsoft Windows operating system, anddistributions of the Linux operating system. (UNIX is a registeredtrademark of The Open Group in the United States and other countries.Microsoft and Windows are trademarks of Microsoft Corporation in theUnited States, other countries, or both. Linux is a registered trademarkof Linus Torvalds in the United States, other countries, or both.) Moregenerally, any operating system supporting the functions disclosedherein may be used. The processor 104 is a programmable logic devicethat performs instruction, logic, and mathematical processing, and maybe representative of one or more CPUs. The network interface device 118may be any type of network communications device allowing the computer102 to communicate with other computers via the network 130.

The storage 108 is representative of hard-disk drives, solid statedrives, flash memory devices, optical media and the like. Generally, thestorage 108 stores application programs and data for use by the computer102. In addition, the memory 106 and the storage 108 may be consideredto include memory physically located elsewhere; for example, on anothercomputer coupled to the computer 102 via the bus 120.

The input device 122 may be any device for providing input to thecomputer 102. For example, a keyboard and/or a mouse may be used. Theinput device 122 represents a wide variety of input devices, includingkeyboards, mice, controllers, and so on.

As shown, the memory 106 contains the operating system 112, an accessmanager 114, an application 115, and a secure profile 117. The accessmanager 114 is an application generally configured to control access tosecure data, such as PHI data. Although shown as a component of theoperating system 112, the access manager 114 may execute as a standaloneapplication, process, or service that interacts with the operatingsystem 112. Generally, the access manager 114 maintains the secureprofile 117 to facilitate fulfillment (or restriction) of attempts toaccess PHI data by an application 115. When an application 115 writesPHI data to the memory 106 (and/or the storage 108), the application 115or the access manager 114 may update the secure profile 117 to reflectthat the memory location includes PHI data. The secure profile 117 mayinclude an indication of the owner (or generator) of the PHI data and aset of entities (such as other applications 115, software processes, orservices) permitted to access the PHI data. When software attempts toaccess the PHI data, the access manager 114 may reference the secureprofile 117 to determine whether the requesting software entity ispermitted to access the PHI data. If the requesting entity is notspecified in the set of entities, the access manager 114 (and/or theoperating system 112) may restrict access to the PHI data. If, however,the requesting entity is specified in the permitted set of entities, theaccess manager 114 (and/or the operating system 112) may allow access tothe PHI data.

The applications 115 may be any type of executable software, such asapplications, services, and processes. The secure profile 117 is a datastructure configured to hold information reflecting which softwarecreated data (stored in the memory 106 and/or the storage 108), whetherthe data is PHI data, and any software entities that can access the PHIdata. In another embodiment, the secure profile 117 may specify preciselocations in the memory 106 and/or storage 108 that include PHI data.Although reflected as being stored in the memory 106, the secure profile117 may be stored in any feasible location, including the storage 108.As shown, the storage 108 includes a data store 116. The data store 116may include any type of data, including PHI data.

As shown, the networked system 100 includes a plurality of servers 150.The servers 150 execute hypervisors 151 which create, run, and managevirtual machines 160. The virtual machines 160 may provide services (notpictured) that create PHI data. Therefore, in one embodiment, thehypervisor 151 includes (or interacts with) instances of the accessmanager 114 and the secure profile 117. As described above, doing sosecures sensitive PHI information stored in a memory or storageaccessible to the server 150 (or software executing thereon).

FIG. 2 is a schematic diagram 200 illustrating techniques to secureprotected PHI data based on a software designation, according to oneembodiment. That is, the schematic diagram 200 illustrates an embodimentwhere the operating system 112 orchestrates the implementation of asecure profile 117 to protect secure data, such as PHI data. In otherembodiments, a hypervisor may perform the functionality of the operatingsystem (OS) 112. As shown, a plurality of software processes 202 mayinteract with the OS 112 during execution. During execution, thesoftware processes 202 may generate, write, access, or otherwise usedata in the processor cache 204, memory 106, or other storage such ashard drives (not pictured). The processes 202 may be any executablesoftware, and three example processes 202 are shown. The processes 202are uniquely identified by one or more process identifiers (PID), suchas the depicted PIDs of 15, 34, and 79. Generally, the softwareprocesses 202 may be identified by any suitable identifier. When one ofthe software processes 202 writes data to a storage location, the OS 112(or a component thereof, such as the access manager 114) may update thesecure profile 117 accordingly. Specifically, the processes 202 mayinform the operating system 112 that they generate, write, use, orotherwise access PHI data. In one embodiment, the processes 202 mayinitially register with the OS 112 as being associated with PHI data. Inanother embodiment, the processes 202 may inform the OS 112 that PHIdata is being written to storage with each write (or other data accessoperation).

As shown, the operating system 112 has populated the secure profile 117with data. Specifically, the secure profile 117 includes a process IDfield 231, a PHI flag 232, and a set of process IDs 233. The process IDfield 231 is an identifier of the processes 202. The PHI flag 232indicates whether the process 202 having the process ID 231 isassociated with PHI data. The authorized PIDs 233 indicate whether otherprocesses 202 are authorized to access the PHI data created by theprocess 202 having the process ID 231. Therefore, as shown, the secureprofile 117 indicates that process ID 34 is associated with PHI data,and that processes having a process ID of 8, 5, and 1022 are authorizedto access the PHI data generated or owned by the process 202 having aprocess ID of 34. Furthermore, as shown, the secure profile 117 reflectsthat process ID 15 is not associated with PHI data, and process ID 79 isassociated with PHI data, but no additional processes are authorized toaccess the PHI data owned or generated by process ID 79.

When one of the processes 202 writes PHI data to the processor cache 204or memory 106, the operating system 112 may mark the data as such. Asshown, therefore, the memory location 218 in the processor cache 204 isdefined as holding PHI data 220, while memory locations 214-217 are notassociated with PHI data. Similarly, as shown, the memory 106 includes aplurality of physical memory units 210-213. The OS 112 has markedregions of memory units 210, 211, and 212 as holding PHI data 220, whilememory unit 213 is not storing PHI data. As shown in FIG. 2, a detailedview 250 of the PHI data 220 describes the content of the PHI data 220.Specifically, the detailed view 250 shows that the PHI data 220 includesa PHI header 251 and a PHI payload portion 255. The PHI payload 255 isthe data portion of the PHI data 220—it is the payload 255 that includesthe protected information. As shown, the PHI header 251 includes asecure flag 253 and an owner field 254. The secure flag 253 of the PHIheader 251 specifies whether the data is secure data, such as PHI data.The owner field 254 of the PHI header 251 is configured to store theprocess ID 231 of a process 202. Therefore, the owner field 254 andsecure flag 253 of the PHI header 251 may correspond to the process ID231 and secure flag 232 of the software secure profile 117,respectively. For example, a first PHI header 251 may specify a secureflag 253 of “true” and an owner field 254 of “34,” indicating the PHIdata 220 stored in the memory 212 is secure data owned by the process202 having a process ID of 34. In at least one embodiment, the PHIheader 251 may also specify additional processes permitted to access thePHI data (such as the processes defined in the authorized PID 233).

When another process 202 attempts to access data, the OS 112 maydetermine, from the PHI header 251, whether the data is secure PHI data.If the secure flag 253 of the PHI header 251 indicates the data issecure PHI data 220, the OS 251 may use the owner field 254 from the PHIheader 251 to determine whether to grant access to the PHI data 220. Forexample, if the process ID of the process 202 matches the owner field254 of the PHI header 251, the OS 112 may permit access to the PHI data220. However, if the process ID does not match the owner field 254 ofthe PHI header 251, the OS 112 may index the secure profile 117 usingthe owner field 254 as a process ID 231, and determine whether theprocess ID attempting to access the PHI data 220 is listed as a memberof the set of PIDs 233 authorized to access the PHI data 220. If theprocess requesting access to the PHI data 220 is an authorized processin the authorized PIDs 233, the OS 112 may permit access to the PHI data220. If the process requesting access to the PHI data 220 is not anauthorized process, the OS may restrict access to the PHI data 220.

Therefore, for example, if the PHI data 220 in the memory 210 has a PHIheader 250 specifying a secure flag 253 of “true” and an owner flag 254of “34,” and process 34 subsequently requests access the PHI data 220 inthe memory 210, the OS 112 may permit the process 34 to access the PHIdata 220, as process 34 is the owner of the PHI data. Similarly, ifprocess 1022 attempts to access the PHI data 220 in memory 210 owned byprocess 34, the OS 112 may permit access, as process 1022 is listed asan authorized PID 233 in the secure profile 117. If, however, process 15attempts to access the PHI data 220 in memory 210 owned by the process34, the OS 112 may block the access, as the process 15 is not the ownerof the data, and is not listed as authorized in the authorized PIDs 233for process ID 34. If data stored in the system has a header 251 with asecure flag 253 that indicates the data is not secure, then any process202 may access the data.

As another example, if the process 15 is a memory dump processconfigured to read and output the data in the processor cache 204 and/orthe memory 106, the process 15 will not output secure PHI data 220.Because process 15 is not listed as being an owner 254 of PHI data inany PHI header 251, and process 15 is not an authorized PID 233 for anyPHI data in the secure table 117, the process 15 cannot read the PHIdata 220.

FIG. 3 illustrates a method 300 to secure protected PHI data based on asoftware designation, according to one embodiment. Generally, the stepsof the method 300 ensure that data designated as protected data is onlyaccessible to authorized software processes. The method 300 begins atstep 310, where a software process loads and executes on a computingsystem, and registers itself as PHI-based software with the operatingsystem (OS) 112 and/or the access manager 114. The software process maybe any executable computer code, such as an application, executable,driver, service, and the like. At step 220, the OS 112 may update thesecure profile 117 to include a process ID 231 for the registeringprocess and an authorized PID 233 of any other processes the registeringprocess indicates are authorized to access PHI data generated by theregistering process.

At step 330, the OS 112 may detect read and/or write operationsperformed by the registered process to storage (such as memory, caches,registers, and/or secondary storage), and mark the subject data as PHIdata. For example, if the registered process saves a file to a harddrive, the OS 112 may add a PHI header to the file indicating the fileincludes PHI data and is owned by the registered process. Similarly, ifthe registered process writes data to the system's L1 cache, the OS 112may add a PHI header to the data indicating the data includes PHI dataand is owned by the registered process. At step 340, the OS 112 mayintercept a request to access data that has been marked as PHI data. Theaccess may be any operation, such as a read, write, modify, or deletionoperation. The request may be made by any process executing on thesystem. The OS 112 may determine that the request targets PHI data basedon the PHI header associated with the requested data. At step 350, theOS 112 may reference the PHI header of the data and/or the secure table117 to determine whether the requesting process has the requisitepermissions to access the data. For example, if the requesting processis the owner (or creator) of the PHI data, the process ID listed asowner in the PHI header for the PHI data would match the process ID ofthe requesting process, and the OS 112 would permit access to the data.If the requesting process is not the owner (or creator) of the PHI data,the OS 112 may reference the secure table 117 to determine whether theprocess ID of the process is specified as an authorized PID 233 for thePHI data.

At step 360, the OS 112 may restrict the requesting process fromaccessing the PHI data upon determining that the requesting process doesnot have permission to access the PHI data. For example, the OS 112 maydetermine that the requesting process is not the owner of the data (asspecified in the PHI header) and determine that the requesting processis not listed as an authorized process 233 in the secure table 117. Atstep 370, the OS 112 may permit the requesting process's request toaccess the PHI data upon determining that the process is permitted toaccess the PHI data. For example, the OS 112 may determine that therequesting process is specified as the owner of the data in the PHIheader of the PHI data. Similarly, the OS 112 may determine that thesecure table 117 entry associated with the PHI data includes therequesting process as a member of the authorized processes 233.

Advantageously, embodiments disclosed herein provide techniques tomaintain the security of personal health information stored in computerstorage. Embodiments disclosed herein mark stored data containing suchinformation as PHI data, and maintain a secure table specifying softwaremodules permitted to access the PHI data. Doing so keeps the PHI datasecure, as current processes may unknowingly expose the PHI data duringnormal operation.

The descriptions of the various embodiments of the present inventionhave been presented for purposes of illustration, but are not intendedto be exhaustive or limited to the embodiments disclosed. Manymodifications and variations will be apparent to those of ordinary skillin the art without departing from the scope and spirit of the describedembodiments. The terminology used herein was chosen to best explain theprinciples of the embodiments, the practical application or technicalimprovement over technologies found in the marketplace, or to enableothers of ordinary skill in the art to understand the embodimentsdisclosed herein.

In the foregoing, reference is made to embodiments presented in thisdisclosure. However, the scope of the present disclosure is not limitedto specific described embodiments. Instead, any combination of therecited features and elements, whether related to different embodimentsor not, is contemplated to implement and practice contemplatedembodiments. Furthermore, although embodiments disclosed herein mayachieve advantages over other possible solutions or over the prior art,whether or not a particular advantage is achieved by a given embodimentis not limiting of the scope of the present disclosure. Thus, therecited aspects, features, embodiments and advantages are merelyillustrative and are not considered elements or limitations of theappended claims except where explicitly recited in a claim(s). Likewise,reference to “the invention” shall not be construed as a generalizationof any inventive subject matter disclosed herein and shall not beconsidered to be an element or limitation of the appended claims exceptwhere explicitly recited in a claim(s).

Aspects of the present invention may take the form of an entirelyhardware embodiment, an entirely software embodiment (includingfirmware, resident software, micro-code, etc.) or an embodimentcombining software and hardware aspects that may all generally bereferred to herein as a “circuit,” “module” or “system.”

The present invention may be a system, a method, and/or a computerprogram product. The computer program product may include a computerreadable storage medium (or media) having computer readable programinstructions thereon for causing a processor to carry out aspects of thepresent invention.

The computer readable storage medium can be a tangible device that canretain and store instructions for use by an instruction executiondevice. The computer readable storage medium may be, for example, but isnot limited to, an electronic storage device, a magnetic storage device,an optical storage device, an electromagnetic storage device, asemiconductor storage device, or any suitable combination of theforegoing. A non-exhaustive list of more specific examples of thecomputer readable storage medium includes the following: a portablecomputer diskette, a hard disk, a random access memory (RAM), aread-only memory (ROM), an erasable programmable read-only memory (EPROMor Flash memory), a static random access memory (SRAM), a portablecompact disc read-only memory (CD-ROM), a digital versatile disk (DVD),a memory stick, a floppy disk, a mechanically encoded device such aspunch-cards or raised structures in a groove having instructionsrecorded thereon, and any suitable combination of the foregoing. Acomputer readable storage medium, as used herein, is not to be construedas being transitory signals per se, such as radio waves or other freelypropagating electromagnetic waves, electromagnetic waves propagatingthrough a waveguide or other transmission media (e.g., light pulsespassing through a fiber-optic cable), or electrical signals transmittedthrough a wire.

Computer readable program instructions described herein can bedownloaded to respective computing/processing devices from a computerreadable storage medium or to an external computer or external storagedevice via a network, for example, the Internet, a local area network, awide area network and/or a wireless network. The network may comprisecopper transmission cables, optical transmission fibers, wirelesstransmission, routers, firewalls, switches, gateway computers and/oredge servers. A network adapter card or network interface in eachcomputing/processing device receives computer readable programinstructions from the network and forwards the computer readable programinstructions for storage in a computer readable storage medium withinthe respective computing/processing device.

Computer readable program instructions for carrying out operations ofthe present invention may be assembler instructions,instruction-set-architecture (ISA) instructions, machine instructions,machine dependent instructions, microcode, firmware instructions,state-setting data, or either source code or object code written in anycombination of one or more programming languages, including an objectoriented programming language such as Smalltalk, C++ or the like, andconventional procedural programming languages, such as the “C”programming language or similar programming languages. The computerreadable program instructions may execute entirely on the user'scomputer, partly on the user's computer, as a stand-alone softwarepackage, partly on the user's computer and partly on a remote computeror entirely on the remote computer or server. In the latter scenario,the remote computer may be connected to the user's computer through anytype of network, including a local area network (LAN) or a wide areanetwork (WAN), or the connection may be made to an external computer(for example, through the Internet using an Internet Service Provider).In some embodiments, electronic circuitry including, for example,programmable logic circuitry, field-programmable gate arrays (FPGA), orprogrammable logic arrays (PLA) may execute the computer readableprogram instructions by utilizing state information of the computerreadable program instructions to personalize the electronic circuitry,in order to perform aspects of the present invention.

Aspects of the present invention are described herein with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems), and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer readable program instructions.

These computer readable program instructions may be provided to aprocessor of a general purpose computer, special purpose computer, orother programmable data processing apparatus to produce a machine, suchthat the instructions, which execute via the processor of the computeror other programmable data processing apparatus, create means forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks. These computer readable program instructionsmay also be stored in a computer readable storage medium that can directa computer, a programmable data processing apparatus, and/or otherdevices to function in a particular manner, such that the computerreadable storage medium having instructions stored therein comprises anarticle of manufacture including instructions which implement aspects ofthe function/act specified in the flowchart and/or block diagram blockor blocks.

The computer readable program instructions may also be loaded onto acomputer, other programmable data processing apparatus, or other deviceto cause a series of operational steps to be performed on the computer,other programmable apparatus or other device to produce a computerimplemented process, such that the instructions which execute on thecomputer, other programmable apparatus, or other device implement thefunctions/acts specified in the flowchart and/or block diagram block orblocks.

The flowchart and block diagrams in the Figures illustrate thearchitecture, functionality, and operation of possible implementationsof systems, methods, and computer program products according to variousembodiments of the present invention. In this regard, each block in theflowchart or block diagrams may represent a module, segment, or portionof instructions, which comprises one or more executable instructions forimplementing the specified logical function(s). In some alternativeimplementations, the functions noted in the block may occur out of theorder noted in the figures. For example, two blocks shown in successionmay, in fact, be executed substantially concurrently, or the blocks maysometimes be executed in the reverse order, depending upon thefunctionality involved. It will also be noted that each block of theblock diagrams and/or flowchart illustration, and combinations of blocksin the block diagrams and/or flowchart illustration, can be implementedby special purpose hardware-based systems that perform the specifiedfunctions or acts or carry out combinations of special purpose hardwareand computer instructions.

Embodiments of the invention may be provided to end users through acloud computing infrastructure. Cloud computing generally refers to theprovision of scalable computing resources as a service over a network.More formally, cloud computing may be defined as a computing capabilitythat provides an abstraction between the computing resource and itsunderlying technical architecture (e.g., servers, storage, networks),enabling convenient, on-demand network access to a shared pool ofconfigurable computing resources that can be rapidly provisioned andreleased with minimal management effort or service provider interaction.Thus, cloud computing allows a user to access virtual computingresources (e.g., storage, data, applications, and even completevirtualized computing systems) in “the cloud,” without regard for theunderlying physical systems (or locations of those systems) used toprovide the computing resources.

Typically, cloud computing resources are provided to a user on apay-per-use basis, where users are charged only for the computingresources actually used (e.g. an amount of storage space consumed by auser or a number of virtualized systems instantiated by the user). Auser can access any of the resources that reside in the cloud at anytime, and from anywhere across the Internet. In context of the presentinvention, a user may access applications or related data available inthe cloud. For example, the access manager 114 could execute on acomputing system in the cloud and restrict access to PHI data based onsoftware profiles. In such a case, the access manager 114 could maintaina data store listing permissions to access PHI data at a storagelocation in the cloud. Doing so allows a user to access this informationfrom any computing system attached to a network connected to the cloud(e.g., the Internet).

While the foregoing is directed to embodiments of the present invention,other and further embodiments of the invention may be devised withoutdeparting from the basic scope thereof, and the scope thereof isdetermined by the claims that follow.

1-7. (canceled)
 8. A system, comprising: one or more computerprocessors; and a memory containing a program, which when executed bythe processors, performs an operation comprising: receiving, from afirst process, a request to access content stored in a memory;determining that the content comprises protected health information(PHI); determining, from a secure table, a set of processes permitted toaccess the PHI; upon determining the first process is not a member ofthe set of processes, restricting the first process from accessing thePHI; and upon determining the first process is a member of the set ofprocesses, permitting the first process to access to the PHI.
 9. Thesystem of claim 8, the operation further comprising: prior to receivingthe request: writing the PHI data to the memory; and writing, to thesecure table, an indication: (i) of an owner process writing the PHIdata, (ii) that the PHI data is secure data, and (iii) the set ofprocesses permitted to access the PHI.
 10. The system of claim 9,wherein the first process comprises the owner process, wherein the firstprocess is permitted to access the PHI.
 11. The system of claim 8,wherein the request is part of a memory dump performed by the firstprocess responsive to a system failure, wherein the memory dump does notinclude the PHI data, wherein the first process is not a member of theset of processes, wherein the first process did not write the PHI datato the memory.
 12. The system of claim 8, wherein the request isreceived by at least one of: (i) an operating system, and (ii) ahypervisor, wherein the at least one of the operating system and thehypervisor restricts access to the PHI by the first process, wherein theat least one of the operating system and the hypervisor permits accessto the PHI by the first process.
 13. The system of claim 8, wherein thesecure table is stored in the memory, wherein the PHI comprises: (i) aheader portion and (ii) a data portion, wherein the header portioncomprises: (i) an indication that the PHI is secure data, and (ii) anindication of an owner process that created the PHI data.
 14. The systemof claim 13, wherein the content is determined to comprise PHI databased on at least one of: (i) the header portion of the PHI, and (ii)the secure table, wherein the header portion of the PHI furthercomprises an indication of the set of processes permitted to access thePHI.
 15. A computer program product, comprising: a computer-readablestorage medium having computer-readable program code embodied therewith,the computer-readable program code executable by one or more computerprocessors to perform an operation comprising: receiving, from a firstprocess, a request to access content stored in a memory; determiningthat the content comprises protected health information (PHI);determining, from a secure table, a set of processes permitted to accessthe PHI; upon determining the first process is not a member of the setof processes, restricting the first process from accessing the PHI; andupon determining the first process is a member of the set of processes,permitting the first process to access to the PHI.
 16. The computerprogram product of claim 15, the operation further comprising: prior toreceiving the request: writing the PHI data to the memory; and writing,to the secure table, an indication: (i) of an owner process writing thePHI data, (ii) that the PHI data is secure data, and (iii) the set ofprocesses permitted to access the PHI.
 17. The computer program productof claim 16, wherein the first process comprises the owner process,wherein the first process is permitted to access the PHI.
 18. Thecomputer program product of claim 15, wherein the request is received byat least one of: (i) an operating system, and (ii) a hypervisor, whereinthe at least one of the operating system and the hypervisor restrictsaccess to the PHI by the first process, wherein the at least one of theoperating system and the hypervisor permits access to the PHI by thefirst process, wherein the request is part of a memory dump performed bythe first process responsive to a system failure, wherein the memorydump does not include the PHI data, wherein the first process is not amember of the set of processes, wherein the first process did not writethe PHI data to the memory.
 19. The computer program product of claim15, wherein the secure table is stored in the memory, wherein the PHIcomprises: (i) a header portion and (ii) a data portion, wherein theheader portion comprises: (i) an indication that the PHI is secure data,and (ii) an indication of an owner process that created the PHI data.20. The computer program product of claim 19, wherein the content isdetermined to comprise PHI data based on at least one of: (i) the headerportion of the PHI, and (ii) the secure table, wherein the headerportion of the PHI further comprises an indication of the set ofprocesses permitted to access the PHI.